diff --git a/src/_h5ai/client/js/inc/core/util.js b/src/_h5ai/client/js/inc/core/util.js
index 74ed06fc..6ab4f6a5 100644
--- a/src/_h5ai/client/js/inc/core/util.js
+++ b/src/_h5ai/client/js/inc/core/util.js
@@ -1,4 +1,4 @@
-modulejs.define('core/util', [], function () {
+modulejs.define('core/util', ['_'], function (_) {
 
 
     function regularCmpFn(val1, val2) {
@@ -65,9 +65,37 @@ modulejs.define('core/util', [], function () {
         return 0;
     }
 
+    function escapePattern(sequence) {
+
+        return sequence.replace(/[\-\[\]{}()*+?.,\\$\^|#\s]/g, '\\$&');
+    }
+
+    function parsePattern(sequence, advanced) {
+
+        if (!advanced) {
+            return escapePattern(sequence);
+        }
+
+        if (sequence.substr(0, 3) === 're:') {
+            return sequence.substr(3);
+        }
+
+        sequence = _.map(_.trim(sequence).split(/\s+/), function (part) {
+
+            return _.map(part.split(''), function (character) {
+
+                return escapePattern(character);
+            }).join('.*?');
+        }).join('|');
+
+        return sequence;
+    }
+
 
     return {
         regularCmpFn: regularCmpFn,
-        naturalCmpFn: naturalCmpFn
+        naturalCmpFn: naturalCmpFn,
+        escapePattern: escapePattern,
+        parsePattern: parsePattern
     };
 });
diff --git a/src/_h5ai/client/js/inc/ext/filter.js b/src/_h5ai/client/js/inc/ext/filter.js
index 71804755..c79259f5 100644
--- a/src/_h5ai/client/js/inc/ext/filter.js
+++ b/src/_h5ai/client/js/inc/ext/filter.js
@@ -1,8 +1,9 @@
-modulejs.define('ext/filter', ['_', '$', 'core/event', 'core/location', 'core/resource', 'core/settings', 'view/view'], function (_, $, event, location, resource, allsettings, view) {
+modulejs.define('ext/filter', ['_', '$', 'core/event', 'core/location', 'core/resource', 'core/settings', 'core/util', 'view/view'], function (_, $, event, location, resource, allsettings, util, view) {
 
     var settings = _.extend({
             enabled: false,
-            debounceTime: 100
+            debounceTime: 100,
+            advanced: false
         }, allsettings.filter);
     var template =
             '<div id="filter" class="tool">' +
@@ -45,36 +46,12 @@ modulejs.define('ext/filter', ['_', '$', 'core/event', 'core/location', 'core/re
         view.setItems('filter', matchedItems);
     }
 
-    function escapeRegExp(sequence) {
-
-        return sequence.replace(/[\-\[\]{}()*+?.,\\$\^|#\s]/g, '\\$&');
-    }
-
-    function parseInput(sequence) {
-
-        if (sequence.substr(0, 3) === 're:') {
-            return sequence.substr(3);
-        }
-
-        return escapeRegExp(sequence);
-
-        // sequence = $.map($.trim(sequence).split(/\s+/), function (part) {
-
-        //     return _.map(part.split(''), function (character) {
-
-        //         return escapeRegExp(character);
-        //     }).join('.*?');
-        // }).join('|');
-
-        // return sequence;
-    }
-
     function update() {
 
         if (inputIsVisible) {
             $filter.addClass('active');
             $input.focus();
-            filter(parseInput($input.val()));
+            filter(util.parsePattern($input.val(), settings.advanced));
         } else {
             filter();
             $filter.removeClass('active');
diff --git a/src/_h5ai/client/js/inc/ext/search.js b/src/_h5ai/client/js/inc/ext/search.js
index fbc1332d..9f65a438 100644
--- a/src/_h5ai/client/js/inc/ext/search.js
+++ b/src/_h5ai/client/js/inc/ext/search.js
@@ -1,8 +1,9 @@
-modulejs.define('ext/search', ['_', '$', 'core/event', 'core/location', 'core/resource', 'core/server', 'core/settings', 'model/item', 'view/view'], function (_, $, event, location, resource, server, allsettings, Item, view) {
+modulejs.define('ext/search', ['_', '$', 'core/event', 'core/location', 'core/resource', 'core/server', 'core/settings', 'core/util', 'model/item', 'view/view'], function (_, $, event, location, resource, server, allsettings, util, Item, view) {
 
     var settings = _.extend({
             enabled: false,
-            debounceTime: 300
+            debounceTime: 300,
+            advanced: false
         }, allsettings.search);
     var template =
             '<div id="search" class="tool">' +
@@ -47,36 +48,12 @@ modulejs.define('ext/search', ['_', '$', 'core/event', 'core/location', 'core/re
         });
     }
 
-    function escapeRegExp(sequence) {
-
-        return sequence.replace(/[\-\[\]{}()*+?.,\\$\^|#\s]/g, '\\$&');
-    }
-
-    function parseInput(sequence) {
-
-        if (sequence.substr(0, 3) === 're:') {
-            return sequence.substr(3);
-        }
-
-        return escapeRegExp(sequence);
-
-        // sequence = $.map($.trim(sequence).split(/\s+/), function (part) {
-
-        //     return _.map(part.split(''), function (character) {
-
-        //         return escapeRegExp(character);
-        //     }).join('.*?');
-        // }).join('|');
-
-        // return sequence;
-    }
-
     function update() {
 
         if (inputIsVisible) {
             $search.addClass('active');
             $input.focus();
-            search(parseInput($input.val()));
+            search(util.parsePattern($input.val(), settings.advanced));
         } else {
             search();
             $search.removeClass('active');
diff --git a/src/_h5ai/client/js/lib/lodash-3.8.0.min.js b/src/_h5ai/client/js/lib/lodash-3.8.0.min.js
new file mode 100644
index 00000000..a552cabf
--- /dev/null
+++ b/src/_h5ai/client/js/lib/lodash-3.8.0.min.js
@@ -0,0 +1,53 @@
+/**
+ * @license
+ * lodash 3.8.0 (Custom Build) lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
+ * Build: `lodash exports="global" include="compact,contains,debounce,difference,each,extend,filter,indexOf,intersection,isFunction,isNumber,isString,keys,map,pluck,sortBy,trim,values,without"`
+ */
+;(function(){function n(n,r,t){if(r!==r){n:{for(r=n.length,t+=-1;++t<r;){var e=n[t];if(e!==e){n=t;break n}}n=-1}return n}for(t-=1,e=n.length;++t<e;)if(n[t]===r)return t;return-1}function r(n){return typeof n=="function"||false}function t(n){return typeof n=="string"?n:null==n?"":n+""}function e(n,r){for(var t=-1,e=n.length;++t<e&&-1<r.indexOf(n.charAt(t)););return t}function u(n,r){for(var t=n.length;t--&&-1<r.indexOf(n.charAt(t)););return t}function o(n,r){var t;n:{t=n.a;var e=r.a;if(t!==e){var u=t===t,o=e===e;
+
+if(t>e||!u||t===yn&&o){t=1;break n}if(t<e||!o||e===yn&&u){t=-1;break n}}t=0}return t||n.b-r.b}function c(n){return!!n&&typeof n=="object"}function a(n){return 160>=n&&9<=n&&13>=n||32==n||160==n||5760==n||6158==n||8192<=n&&(8202>=n||8232==n||8233==n||8239==n||8287==n||12288==n||65279==n)}function i(n){for(var r=-1,t=n.length;++r<t&&a(n.charCodeAt(r)););return r}function f(n){for(var r=n.length;r--&&a(n.charCodeAt(r)););return r}function l(){}function s(n){var r=n?n.length:0;for(this.data={hash:Ar(null),
+set:new yr};r--;)this.push(n[r])}function p(n,r){var t=n.data;return(typeof r=="string"||en(r)?t.set.has(r):t.hash[r])?0:-1}function h(n,r){var t=-1,e=n.length;for(r||(r=Array(e));++t<e;)r[t]=n[t];return r}function v(n,r){for(var t=-1,e=n.length;++t<e&&false!==r(n[t],t,n););return n}function g(n,r){for(var t=-1,e=n.length,u=-1,o=[];++t<e;){var c=n[t];r(c,t,n)&&(o[++u]=c)}return o}function y(n,r){for(var t=-1,e=n.length,u=Array(e);++t<e;)u[t]=r(n[t],t,n);return u}function b(n,r,t){t||(t={});for(var e=-1,u=r.length;++e<u;){
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diff --git a/src/_h5ai/conf/options.json b/src/_h5ai/conf/options.json
index 277c5561..03cc3b2b 100644
--- a/src/_h5ai/conf/options.json
+++ b/src/_h5ai/conf/options.json
@@ -102,18 +102,20 @@ Options
     },
 
     /*
-    Allow filtering the displayed files and folders.
-    Will check entries for right order of characters, i.e.
-    "ab" matches "ab", "axb", "xaxbx" but not "ba".
-    Space separated sequences get OR-ed.
+    Allow filtering the displayed files and folders in current folder.
+    Checks for substrings.
 
-    Filters will be treated as JavaScript regular expressions
-    if you prefix them with "re:".
+    If advanced is enabled it checks entries for right order of characters,
+    i.e. "ab" matches "ab", "axb", "xaxbx" but not "ba". Space separated
+    sequences get OR-ed. Searches will be treated as JavaScript regular
+    expressions if you prefix them with "re:".
 
+    - advanced: boolean, use advanced pattern parsing
     - debounceTime: number, debounce wait time in milliseconds
     */
     "filter": {
         "enabled": true,
+        "advanced": true,
         "debounceTime": 100
     },
 
@@ -265,18 +267,20 @@ Options
     },
 
     /*
-    Allow searching files and folders.
-    Will check entries for right order of characters, i.e.
-    "ab" matches "ab", "axb", "xaxbx" but not "ba".
-    Space separated sequences get OR-ed.
+    Allow searching files and folders in and below current folder.
+    Checks for substrings.
 
-    Searches will be treated as JavaScript regular expressions
-    if you prefix them with "re:".
+    If advanced is enabled it checks entries for right order of characters,
+    i.e. "ab" matches "ab", "axb", "xaxbx" but not "ba". Space separated
+    sequences get OR-ed. Searches will be treated as JavaScript regular
+    expressions if you prefix them with "re:".
 
+    - advanced: boolean, use advanced pattern parsing
     - debounceTime: number, debounce wait time in milliseconds
     */
     "search": {
         "enabled": true,
+        "advanced": true,
         "debounceTime": 300
     },